Method of vulcanizing rubber.



H. F. PENDLETON.

METHOD OF VULGANIZING RUBBER.

APPLIGATION FILED NOV. 15, 1907.

956,409. Patented Apr. 26, 1910.

42mm woman, :9 MM J. 1

Q7660;- n e y.

In "as n60]? UNITED STATES PATENT OFFICE. -HARRY FILLMOIRE PEN DLE TON,OF BROOKLYN, NEW YORK, ASSIGNOR TO THE AMERI- CAN WBINGER COMPANY, ACORPORATION OF BHOIOE ISLAND.

. METHOD or vuncnmzme RUBBER,

Patented Apr. 26, 1910.

Application filed November 15, 1907. Serial No. 402,283.

is a description.

The obj eet of my invention is to vulcanize a mass of rubber upon acore' of ropeso that the expansion of therubber in the vulcanizingprocess will force it into the depressions of the rope and cause it togrip it firmly.

I accomplish this result by placing the rubber to be vulcanized upon therope core and submitting it to the vulcanizing heat while inclosed in ati ht mold which is provided with egress c annels for the ro e.

These channels also serve to vent the mo d. The-resultant product showsthat the rubher is forced into the most minute de resupon a coreofi rope4.

The materials employed are the usual ones for this purpose and the heatis applied in the. usual manner. a

'I claim-- v 1. The process which consists in providing a fibrous ropecore, positioning 1t in a quantity of material to be vulcanizedthereupon, agplyin vulcanizing heat and pressure, an there y causingsaid material to be forcedradially into the interstices of the rope. v.2.iThe process which consists prov1d- I ing a fibrous rope core made upof twisted strands, and a quantity of material to be vulcanizedthereupon, applyin vulcanizing heat, and causing said materia to beforced radially into the interstices of the rope,

3. The process which consists in providing an elongated porous core, anda quantity of mate'rial to be vulcanized thereupon, applying vulcanizingheat, and caus ngi sald materlal to be forced'into the said core fromall sides in lines parallel to across-sectional plane of the core. a

4. The process which consists in providing, within a closed mold havingegress passages, a fibrous rope core adapted to fitsaid passages and asurrounding quantity of material to be vulcanized, so that the ends ofthe core extend within said passages, and

then applying vulcanizingheat.

5. The process which consists in providing, within a closed mold havingegress passages, a fibrous rope core made up of twisted strands, adaptedto fit said passages, and a surrounding quantity of material to bevulcanized, so that the ends of the core extend canizing heat.

6. The processwhich consists in providing, within a closed mold havingegress passages, a porous core adapted to fit said passages and asurrounding quantity of-material to be vulcanized, so that the ends ofthe core extend within said passages, and

then applying vulcanizing heat.

t 7. The process which consists in providing, within a closed mold havinegress passages, a flexible 'porous core a apted to fit said passa esand a surrounding quantity of materia to be vulcanized, so that the endsof the core extend within said passages, 'and then applying vulcanlzmgheat.

r- HARRY rumors PENDLETON.

Witnesses A. G. BEARDSLEY, Jr,, FREDERICK I. A,LLEN.

'within said passages, and then applying vul-

